Abstract

thin films were synthesized on platinized silicon and lanthanum aluminate substrates using chemical solution deposition technique. The films on substrate were highly oriented, whereas the films on substrate were polycrystalline. The low dielectric loss in the films makes them attractive for fabricating tunable dielectric devices. An eight-element coupled microstrip phase shifter was fabricated on film and tested in the frequency range . The maximum figure of merit (phase shift per loss) of was obtained for film, which was better than commonly observed value in pure barium strontium titanate films. This makes a potential candidate material for further investigations for microwave applications.